Dynamic Behavior of a Drop on a Vertically Oscillating Surface - Selected Topics of Computational and Experimental Fluid Mechanics - page 466

Fig. 4 a and b To p view, at two different times, of a drop of 200 µ l of water subject to a frequency
of 43Hz

Fig. 5 a and b To p view, at two different times, of a drop of 200 µ l of water subject to a frequency

of 46Hz

The geometric phase also has a periodic behavior. From the side view a
compression-expansion cycle is observed. The height of one of the peaks has been
measured as a function of time (Fig. 6 ).

4.3 Chaotic Phase

For a drop of 60 l vibrating between 41 and 56Hz a chaotic behavior can be

observed. The form is irregular, nodes and antinodes do not seem to have any con-
nection among them; the drop does not react as a whole. The variation of the height
is different for each node, and there is not a unique frequency of oscillation as can
be seen in Fig. 7 .

µ